Title: Balance of the Day Ancillary Service Market
Next Group:
Next Step:
Status: Approved on 04/17/2012
Effective Dates:


Date Gov Body Action Taken Next Steps
04/17/2012 BOARD Approved
02/02/2012 TAC Recommended for Approval ERCOT Board consideration of NPRR397
01/19/2012 PRS Recommended for Approval TAC consideration of NPRR397
12/15/2011 PRS Recommended for Approval PRS Impact Analysis review
08/18/2011 PRS Deferred/Tabled PRS language consideration

Voting Record

Date Gov Body Motion Result
04/17/2012 BOARD To approve NPRR397 as recommended by TAC in the 2/2/12 TAC Report. Passed
02/02/2012 TAC To recommend approval of NPRR397 as recommended by PRS in the 1/19/12 PRS Report. Passed
01/19/2012 PRS To endorse and forward the 12/15/11 PRS Report and Impact Analysis for NPRR397 to TAC and to recommend a priority of 2012 and rank of 640. Passed
12/15/2011 PRS To recommend approval of NPRR397 as amended by the 12/8/11 ERCOT comments and as revised by PRS. Passed
08/18/2011 PRS To table NPRR397. Passed

Vote tallies here reflect individual votes, not the weight of the votes by market segment. Affirmative votes are not recorded in these vote tallies. For additional details on the voting record, please consult the Recommendation or Action Report, or the official vote tally if available, as posted in the key documents.


Status: Approved
Date Posted: Aug 1, 2011
Sponsor: Morgan Stanley
Urgent: No
Sections:,, 6.7.2, 6.7.3
Description: This Nodal Protocol Revision Request (NPRR) allows the Supplemental Ancillary Services Market (SASM) to be operated as a balance of the day market for Ancillary Services.
Reason: The current market locks entities in once they have sold Ancillary Services to ERCOT in the Day-Ahead Market (DAM). Conditions often change after the close of the DAM and Real-Time. This NPRR would allow Qualified Scheduling Entities (QSEs) the ability to modify their responsibilities and optimize the use of their Resources.

Key Documents

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